The Science of Superfoods

• Introduction
• Chapter 1: Defining Superfoods: Separating Fact from Fiction
• Chapter 2: The Nutritional Science of Superfoods: Vitamins, Minerals, and Beyond
• Chapter 3: Antioxidants and Phytochemicals: The Power of Plant Compounds
• Chapter 4: Debunking Superfood Myths: Addressing Common Misconceptions
• Chapter 5: Superfoods and the Human Microbiome: Gut Health Connection
• Chapter 6: Berries: Tiny Fruits, Mighty Antioxidants
• Chapter 7: Dark Leafy Greens: The Foundation of Cellular Health
• Chapter 8: Cruciferous Vegetables: Nature's Detoxifiers
• Chapter 9: Fatty Fish: Omega-3s for Heart and Brain
• Chapter 10: Nuts and Seeds: Healthy Fats and Fiber Powerhouses
• Chapter 11: Superfoods and Brain Health: Nourishing Cognitive Function
• Chapter 12: Superfoods for Mood Enhancement: The Food-Mood Connection
• Chapter 13: Adaptogens: Stress-Relieving Superfoods
• Chapter 14: Superfoods and Sleep: Promoting Restful Nights
• Chapter 15: Superfoods for Energy and Vitality: Combating Fatigue
• Chapter 16: Ancient Grains: The Legacy of Quinoa and Amaranth
• Chapter 17: Amazonian Superfoods: Acai, Camu Camu, and More
• Chapter 18: Asian Superfoods: Goji Berries, Ginseng, and Green Tea
• Chapter 19: African Superfoods: Baobab, Moringa, and Teff
• Chapter 20: Mediterranean Diet: Superfoods at its Core
• Chapter 21: Sourcing Superfoods: Finding Quality and Sustainability
• Chapter 22: Superfood Recipes: Breakfasts and Smoothies
• Chapter 23: Superfood Recipes: Lunches and Dinners
• Chapter 24: Superfood Snacks and Desserts: Healthy Indulgences
• Chapter 25: Creating Your Personalized Superfood Plan

The world of nutrition is constantly evolving, with new research emerging regularly that sheds light on the profound impact of food on our health and well-being. In recent years, the term "superfoods" has gained significant traction, capturing the attention of health enthusiasts, researchers, and the media alike. These foods, often touted for their exceptional nutritional profiles, are believed to offer a concentrated dose of vitamins, minerals, antioxidants, and other beneficial compounds that can promote optimal health and even extend lifespan. But what exactly are superfoods, and what distinguishes them from ordinary healthy foods? This book aims to answer these questions, delving into the science behind superfoods, unraveling their nutritional secrets, and providing practical guidance on how to incorporate them into your daily diet.

While "superfood" isn't a formally recognized scientific term, it generally refers to foods exceptionally dense in nutrients and associated with numerous health benefits. These aren't miracle cures, but rather powerful allies in a holistic approach to well-being. They provide a concentrated source of vital nutrients that can support various bodily functions, from boosting immunity and fighting inflammation to enhancing cognitive function and promoting heart health. This book will explore the scientific evidence supporting the claims made about superfoods, separating substantiated benefits from marketing hype. We will dissect the nutritional composition of a wide range of superfoods, explaining how their unique components contribute to overall health.

This book is more than just a list of nutrient-rich foods; it's a comprehensive guide that empowers you to understand and utilize the power of superfoods. We'll journey through the fascinating history and cultural significance of these foods, exploring how they've been used for centuries in traditional medicine and cuisine around the world. From the ancient grains of the Andes to the vibrant berries of the Amazon, we'll uncover the stories behind these nutritional powerhouses. You will discover that many traditional cultures, with diets centered on minimally-processed, whole foods, have intuitively incorporated many ingredients now recognized as superfoods.

Furthermore, we will address common misconceptions and myths surrounding superfoods, providing clarity and evidence-based insights. It is crucial to avoid falling prey to exaggerated claims and understand that superfoods are most effective when integrated into a balanced and varied diet. There are also aspects of sustainability to be considered, together with other potential risks such as interactions with medications and potential allergic reactions. We will also dedicate a significant portion of this book to the practical application of superfoods. You'll find delicious and easy-to-follow recipes, meal plans, and tips on sourcing high-quality superfoods.

The goal of The Science of Superfoods is to provide you with the knowledge and tools necessary to make informed choices about your diet and harness the potential of superfoods to enhance your health and well-being. This journey is about cultivating a deeper understanding of the relationship between food and health, empowering you to take control of your nutritional destiny. This book will equip the reader with the insights and practical strategies needed to unlock the nutritional powerhouses for optimal health and longevity.

The produce aisle of a modern supermarket can be a bewildering place. Alongside familiar apples and oranges, you'll find exotic fruits with unfamiliar names, packaged greens promising miraculous health benefits, and powders boasting concentrated doses of nutrients you can barely pronounce. Many of these items are labeled "superfoods," a term that implies a superior level of nutritional value and the potential to transform your health. But what does this label truly mean? Is it a scientifically validated category, or simply a clever marketing strategy? The answer, as with many things in the world of nutrition, is nuanced.

The term "superfood" itself is not a scientifically recognized term. There's no official body that certifies foods as "super," and no universally agreed-upon criteria for achieving this status. Instead, it's a marketing term that has gained immense popularity in recent years, often used to promote foods with purported health benefits, especially those that are high in specific nutrients or phytochemicals. While the lack of a formal definition might lead some to dismiss the concept entirely, it's important to acknowledge that the underlying principle – that certain foods are more nutrient-dense than others – is valid.

Think of it this way: all whole, unprocessed foods contribute to a healthy diet. Fruits, vegetables, whole grains, legumes, nuts, and seeds all provide essential vitamins, minerals, and fiber. However, some foods stand out due to their exceptionally high concentrations of these beneficial components. They offer a significant nutritional "bang for your buck," delivering a greater density of vitamins, minerals, antioxidants, and other health-promoting compounds per calorie compared to other foods. It's this concentration of nutrients that often earns a food the "superfood" label.

Consider blueberries, a frequently cited example. While all berries are nutritious, blueberries are particularly rich in anthocyanins, a type of antioxidant responsible for their deep blue hue. These anthocyanins have been linked to various health benefits, including improved cognitive function and reduced risk of cardiovascular disease. Similarly, kale, a dark leafy green, is packed with vitamins A, C, and K, as well as calcium, iron, and fiber. It surpasses many other leafy greens in its overall nutrient density. These examples highlight the core concept behind superfoods: a concentration of beneficial compounds that can contribute to overall health.

However, the "superfood" label can be misleading. It sometimes creates a "halo effect," leading consumers to believe that consuming a particular food will automatically confer extraordinary health benefits, regardless of their overall diet or lifestyle. This is where the marketing aspect often overshadows the scientific reality. No single food, no matter how nutrient-rich, can compensate for a poor diet, lack of exercise, or other unhealthy habits. Superfoods are not magic bullets; they are best viewed as valuable components of a balanced and varied diet.

Furthermore, the exotic nature of many superfoods can contribute to the perception that they are inherently superior to more common, locally available options. Foods like goji berries, açaí, and spirulina often carry a higher price tag and are marketed as possessing unique health-boosting properties. While these foods certainly have nutritional merit, it's important to remember that many readily available, affordable foods offer comparable benefits. Broccoli, spinach, sweet potatoes, and apples, for example, are all packed with nutrients and are often more accessible and sustainable choices. It is very easy to become fixated on consuming the latest trendy ingredient, when perhaps the very foods we should be prioritizing have been there all along.

The "superfood" hype also tends to focus on individual nutrients or compounds, often isolating them from the complex matrix of the whole food. For example, a supplement might highlight the high antioxidant content of a particular berry extract, but it may not provide the same synergistic benefits as consuming the whole berry, which also contains fiber, vitamins, and other phytochemicals that work together to promote health. This reductionist approach – focusing on isolated nutrients rather than the whole food – can be misleading and doesn't reflect the holistic nature of nutrition. The natural vitamins, minerals, and antioxidants contained within whole foods are often much more readily absorbed and tolerated than when they are provided in a synthetic form in dietary supplements.

Another issue with the "superfood" designation is the lack of regulation and the potential for exaggerated claims. Companies can freely use the term on their products, even if the scientific evidence supporting their purported benefits is weak or preliminary. This can lead to consumer confusion and a distorted perception of the actual health-promoting properties of certain foods. It's crucial to be a discerning consumer, looking beyond the marketing hype and seeking out reliable sources of information, such as peer-reviewed scientific studies and advice from registered dietitians or nutritionists.

Moreover, the emphasis on specific "superfoods" can sometimes overshadow the importance of dietary diversity. A truly healthy diet is one that includes a wide variety of whole, unprocessed foods, providing a broad spectrum of nutrients. Focusing solely on a handful of "superfoods" while neglecting other nutrient-rich options can lead to an imbalanced intake and potentially limit the overall health benefits. A more effective approach is to think in terms of a "super plate" rather than just individual "superfoods" – a plate filled with a colorful array of fruits, vegetables, whole grains, lean proteins, and healthy fats.

The sustainability of superfood production is another factor to consider. The growing global demand for certain superfoods, such as quinoa and avocados, has led to environmental and social concerns in some producing regions. Increased cultivation can strain local resources, contribute to deforestation, and impact the livelihoods of local farmers. Choosing sustainably sourced superfoods, when possible, and supporting ethical farming practices are important considerations for conscious consumers. Making informed choices based on environmental and social responsibility, as well as nutritional value, is key to a truly holistic approach to healthy eating.

In essence, the "superfood" concept is a double-edged sword. On one hand, it highlights the exceptional nutritional value of certain foods and encourages consumers to incorporate them into their diets. On the other hand, it can be a misleading marketing tactic that oversimplifies the complexities of nutrition and promotes unrealistic expectations. A more balanced and informed perspective is to recognize the inherent value of nutrient-dense foods, while understanding that they are most effective when integrated into a holistic approach to health that includes a varied diet, regular exercise, adequate sleep, and stress management.

Instead of chasing the latest "superfood" trend, focus on building a foundation of healthy eating habits that prioritize whole, unprocessed foods. Embrace variety, explore different cuisines, and listen to your body's cues. There is no one-size-fits-all approach to nutrition, and the optimal diet is one that is tailored to your individual needs, preferences, and lifestyle. By adopting a mindful and informed approach to food choices, you can harness the power of nutrition to support your overall well-being, without getting caught up in the hype of the "superfood" label. Remember, the true "super" power lies not in a single ingredient, but in the synergy of a balanced and diverse diet.

The allure of superfoods often lies in their perceived ability to deliver a concentrated dose of health benefits. But what is it, specifically, about these foods that makes them so nutritionally potent? To understand the science behind superfoods, we need to delve into the world of vitamins, minerals, and other essential nutrients that form the foundation of their health-promoting properties. These micronutrients, although required in relatively small amounts compared to macronutrients like carbohydrates, proteins, and fats, play crucial roles in virtually every bodily function, from energy production and immune defense to cell growth and repair.

Vitamins are organic compounds, meaning they contain carbon, and are essential for various metabolic processes. They are classified as either fat-soluble (vitamins A, D, E, and K) or water-soluble (vitamin C and the B vitamins). Fat-soluble vitamins are stored in the body's fatty tissues and liver, while water-soluble vitamins are not stored to the same extent and need to be replenished more regularly through diet. Each vitamin has a unique set of functions and deficiency symptoms. Vitamin A, for example, is crucial for vision, immune function, and cell growth. Superfoods like sweet potatoes, carrots, and spinach are excellent sources of beta-carotene, a precursor to vitamin A that the body converts as needed. Vitamin D, often called the "sunshine vitamin" because the body can produce it in response to sunlight exposure, plays a vital role in calcium absorption and bone health. Fatty fish, such as salmon and tuna, are among the few dietary sources of vitamin D. Vitamin E is a powerful antioxidant, protecting cells from damage caused by free radicals. Nuts, seeds, and vegetable oils are good sources of this important nutrient. Vitamin K is essential for blood clotting and bone health. Leafy green vegetables, such as kale and spinach, are particularly rich in vitamin K.

The B vitamins, a group of eight water-soluble vitamins, work together as coenzymes, assisting enzymes in various metabolic reactions. They are crucial for energy production, nerve function, and the formation of red blood cells. Thiamin (B1), riboflavin (B2), niacin (B3), pantothenic acid (B5), pyridoxine (B6), biotin (B7), folate (B9), and cobalamin (B12) each have specific roles to play. Whole grains, legumes, and leafy greens are generally good sources of B vitamins, although B12 is primarily found in animal products, making it a concern for vegans and vegetarians. Vitamin C, also known as ascorbic acid, is another water-soluble vitamin and a potent antioxidant. It is essential for collagen synthesis, wound healing, and immune function. Citrus fruits, berries, and bell peppers are excellent sources of vitamin C. Many superfoods boast high levels of one or more of these essential vitamins, contributing to their overall health-promoting profile.

Minerals, unlike vitamins, are inorganic substances, meaning they do not contain carbon. They are essential for a wide range of bodily functions, including bone formation, nerve transmission, muscle contraction, and fluid balance. Major minerals, also known as macrominerals, are needed in larger amounts than trace minerals, or microminerals. Major minerals include calcium, phosphorus, magnesium, sodium, potassium, chloride, and sulfur. Calcium is the most abundant mineral in the body and is crucial for strong bones and teeth, as well as nerve and muscle function. Dairy products, leafy greens, and fortified foods are good sources of calcium. Phosphorus works alongside calcium to build strong bones and is also involved in energy production. Dairy products, meat, and whole grains are good sources of phosphorus. Magnesium is involved in over 300 enzymatic reactions in the body, including energy production, muscle and nerve function, and blood sugar control. Nuts, seeds, whole grains, and leafy greens are good sources of magnesium. Sodium, potassium, and chloride are electrolytes, minerals that carry an electric charge when dissolved in body fluids. They are essential for maintaining fluid balance, nerve transmission, and muscle contraction. Sodium is abundant in processed foods, while potassium is found in fruits, vegetables, and legumes.

Trace minerals, although required in smaller amounts, are equally vital for health. These include iron, zinc, copper, manganese, selenium, iodine, fluoride, chromium, and molybdenum. Iron is a component of hemoglobin, the protein in red blood cells that carries oxygen throughout the body. Red meat, poultry, beans, and fortified cereals are good sources of iron. Zinc is involved in immune function, wound healing, and cell growth. Meat, shellfish, legumes, and nuts are good sources of zinc. Copper is a component of several enzymes and is involved in iron metabolism, energy production, and connective tissue formation. Shellfish, nuts, seeds, and whole grains are good sources of copper. Manganese is involved in bone formation, metabolism, and antioxidant defense. Nuts, seeds, whole grains, and tea are good sources of manganese. Selenium is a powerful antioxidant and is important for thyroid hormone function. Brazil nuts, seafood, and meat are good sources of selenium. Iodine is essential for thyroid hormone production, which regulates metabolism. Iodized salt, seafood, and dairy products are good sources of iodine. Fluoride is important for strong teeth and helps prevent tooth decay. Fluoridated water, tea, and some seafood are sources of fluoride. Chromium plays a role in carbohydrate and lipid metabolism. Broccoli, whole grains, and meat are sources of chromium. Molybdenum is a component of several enzymes involved in detoxification processes. Legumes, grains, and nuts are sources of molybdenum.

Superfoods often excel in their mineral content, providing a concentrated source of these essential nutrients. For example, spinach is rich in iron, magnesium, and potassium. Chia seeds are a good source of calcium, magnesium, and phosphorus. Brazil nuts are exceptionally high in selenium. The specific mineral profile of a superfood contributes to its unique health benefits. Beyond vitamins and minerals, superfoods often contain other beneficial compounds, such as fiber and healthy fats. Dietary fiber, a type of carbohydrate that the body cannot digest, is crucial for digestive health, promoting regularity and preventing constipation. It also helps regulate blood sugar levels, lowers cholesterol, and contributes to feelings of fullness, which can aid in weight management. Fiber is generally categorized as soluble or insoluble. Soluble fiber dissolves in water and forms a gel-like substance in the digestive tract, helping to lower cholesterol and stabilize blood sugar levels. Insoluble fiber does not dissolve in water and adds bulk to the stool, promoting regularity. Many superfoods, such as fruits, vegetables, whole grains, legumes, nuts, and seeds, are excellent sources of both soluble and insoluble fiber.

Healthy fats, particularly monounsaturated and polyunsaturated fats, are essential for overall health. Monounsaturated fats, found in foods like avocados, olive oil, and nuts, can help lower LDL ("bad") cholesterol and reduce the risk of heart disease. Polyunsaturated fats include omega-3 and omega-6 fatty acids. Omega-3 fatty acids, particularly EPA and DHA found in fatty fish, are crucial for heart health, brain function, and reducing inflammation. ALA, another type of omega-3 fatty acid, is found in plant-based sources like flaxseeds, chia seeds, and walnuts. Omega-6 fatty acids are also essential, but the typical Western diet tends to be much higher in omega-6s than omega-3s, creating an imbalance that can promote inflammation. It's important to strive for a healthy ratio of omega-6 to omega-3 fatty acids, emphasizing omega-3-rich foods. Superfoods like fatty fish, nuts, seeds, and avocados are excellent sources of healthy fats, contributing to their cardiovascular and neurological benefits.

The nutritional science of superfoods goes beyond simply listing their vitamin and mineral content. It involves understanding how these nutrients interact with each other and with other compounds in the food, creating a synergistic effect that contributes to overall health. It's also about recognizing that the bioavailability of nutrients – the extent to which they are absorbed and utilized by the body – can vary depending on factors such as food preparation methods, individual gut health, and the presence of other nutrients. For example, the absorption of iron from plant-based sources (non-heme iron) is enhanced by the presence of vitamin C. Similarly, the absorption of fat-soluble vitamins (A, D, E, and K) is improved when consumed with a source of fat. This highlights the importance of considering the whole food matrix and the interplay of different nutrients, rather than focusing solely on individual components. Understanding these nuances is crucial for maximizing the nutritional benefits of superfoods and incorporating them effectively into a balanced and varied diet. The nutritional composition of superfoods, with their high concentrations of vitamins, minerals, fiber, healthy fats, and other beneficial compounds, forms the scientific basis for their purported health-promoting properties.

Beyond the well-known vitamins and minerals, a vast and complex world of compounds exists within plants, contributing significantly to their vibrant colors, distinctive flavors, and, most importantly, their remarkable health benefits. These compounds, broadly categorized as antioxidants and phytochemicals, represent a frontier of nutritional science, with ongoing research continually uncovering their intricate roles in promoting human health and preventing disease. While vitamins and minerals are essential for basic bodily functions, antioxidants and phytochemicals offer an additional layer of protection, acting as powerful defense mechanisms against cellular damage and chronic illness.

Antioxidants, as the name suggests, combat oxidation, a chemical process that occurs naturally in the body as cells produce energy. This process generates unstable molecules called free radicals, which have an unpaired electron. In their quest to become stable, free radicals "steal" electrons from other molecules, including DNA, proteins, and cell membranes. This electron theft, known as oxidative stress, can damage cells and contribute to the development of various chronic diseases, including heart disease, cancer, Alzheimer's disease, and Parkinson's disease. External factors, such as exposure to pollution, cigarette smoke, and ultraviolet radiation, can also increase free radical production, further exacerbating oxidative stress.

Antioxidants act as scavengers, neutralizing free radicals by donating an electron, thus stabilizing them and preventing them from causing cellular damage. The body produces some antioxidants internally, but it also relies on dietary sources to maintain adequate levels. This is where superfoods, particularly fruits, vegetables, and other plant-based foods, play a crucial role. They are packed with a diverse array of antioxidants, each with unique properties and mechanisms of action.

One of the most well-known groups of antioxidants is vitamins, notably vitamin C and vitamin E. Vitamin C, abundant in citrus fruits, berries, and peppers, is a water-soluble antioxidant that works primarily in the extracellular fluid, neutralizing free radicals before they can damage cell membranes. Vitamin E, a fat-soluble antioxidant found in nuts, seeds, and vegetable oils, protects cell membranes, particularly those rich in polyunsaturated fatty acids, from oxidative damage. Beta-carotene, a precursor to vitamin A found in orange and yellow fruits and vegetables like carrots, sweet potatoes, and spinach, also acts as an antioxidant, protecting cells from damage caused by light and oxygen.

However, the world of antioxidants extends far beyond these familiar vitamins. Plants contain a vast array of non-vitamin antioxidants, often classified as phytochemicals. Phytochemicals, also known as phytonutrients, are naturally occurring compounds in plants that are not essential for human survival in the same way as vitamins and minerals, but they offer significant health benefits. They are responsible for the vibrant colors, distinct aromas, and unique flavors of fruits, vegetables, herbs, spices, and other plant-based foods. Thousands of different phytochemicals have been identified, and researchers are continually discovering new ones and unraveling their complex roles in human health.

Flavonoids are one of the largest and most well-studied groups of phytochemicals. They are responsible for the bright colors of many fruits and vegetables, from the deep red of berries to the vibrant yellow of citrus fruits. Flavonoids are further subdivided into several classes, including anthocyanins, flavanols, flavones, isoflavones, and flavonols, each with unique properties and potential health benefits. Anthocyanins, for example, are the pigments that give blueberries, raspberries, and cranberries their vibrant colors. They have been linked to improved cardiovascular health, reduced risk of cognitive decline, and anti-cancer properties. Flavanols, found in cocoa, tea, and grapes, are associated with improved blood vessel function and reduced blood pressure. Isoflavones, abundant in soybeans and other legumes, have weak estrogen-like effects and may offer protection against hormone-related cancers, such as breast cancer.

Carotenoids are another important group of phytochemicals, responsible for the yellow, orange, and red pigments in fruits and vegetables. Beta-carotene, mentioned earlier, is a carotenoid, but there are many others, including lycopene, lutein, and zeaxanthin. Lycopene, abundant in tomatoes and watermelon, is a powerful antioxidant that has been linked to a reduced risk of prostate cancer and heart disease. Lutein and zeaxanthin, found in leafy green vegetables like spinach and kale, are concentrated in the macula of the eye and are essential for protecting against age-related macular degeneration, a leading cause of vision loss.

Sulfur-containing compounds, such as allicin in garlic and sulforaphane in broccoli, are also potent phytochemicals with health-promoting properties. Allicin, responsible for the pungent aroma of garlic, has antibacterial, antiviral, and anti-inflammatory effects. Sulforaphane, found in cruciferous vegetables like broccoli, cauliflower, and Brussels sprouts, has been shown to enhance detoxification processes and reduce cancer risk. These compounds activate enzymes that help the body eliminate harmful substances, including carcinogens.

Polyphenols are a broad category of phytochemicals that include flavonoids, phenolic acids, and other compounds. They are found in a wide variety of plant-based foods, including tea, coffee, fruits, vegetables, and whole grains. Resveratrol, a polyphenol found in grapes and red wine, has gained attention for its potential anti-aging and cardioprotective effects. Curcumin, a polyphenol found in turmeric, is a potent anti-inflammatory and antioxidant compound that has been linked to a reduced risk of chronic diseases, including arthritis and Alzheimer's disease.

The mechanisms by which antioxidants and phytochemicals exert their health benefits are complex and multifaceted. They not only neutralize free radicals but also influence various cellular processes, including gene expression, cell signaling, and inflammation. Some phytochemicals can enhance the activity of antioxidant enzymes produced by the body, boosting its internal defense mechanisms. Others can modulate the immune system, reducing inflammation and promoting a healthy immune response. Certain phytochemicals can even inhibit the growth of cancer cells and induce apoptosis, or programmed cell death, in cancerous cells.

It's important to emphasize that the benefits of antioxidants and phytochemicals are best obtained from whole foods, rather than from isolated supplements. The synergistic interaction of different compounds within a whole food, including vitamins, minerals, fiber, and other phytochemicals, often contributes to its overall health-promoting effects. This complex interplay is difficult to replicate in a supplement, and high doses of isolated antioxidants can even have pro-oxidant effects, meaning they can actually promote oxidative stress rather than prevent it. Consuming a wide variety of colorful fruits, vegetables, and other plant-based foods is the most effective way to ensure a diverse intake of antioxidants and phytochemicals, maximizing their potential health benefits. The "superfood" label is often applied to foods that are exceptionally rich in these compounds, highlighting their potential to contribute to overall health and well-being.

The science of antioxidants and phytochemicals is a rapidly evolving field, with ongoing research continually uncovering new compounds and elucidating their complex roles in human health. As our understanding of these powerful plant compounds grows, so too will our ability to harness their potential to prevent disease and promote optimal well-being. The vibrant colors and diverse flavors of fruits, vegetables, and other plant-based foods are not just aesthetically pleasing; they are indicators of the rich array of antioxidants and phytochemicals that offer a powerful defense against cellular damage and chronic illness. Embracing a diet rich in these "superfoods" is a key strategy for unlocking the potential of plant compounds to enhance health and longevity. Rather than focusing on individual compounds, we should prioritize, as the main thrust of our diet, a rainbow of color provided by fruits and vegetables.